<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Biswas, A.</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Bakthavatsalam, R.</style></author></secondary-authors><tertiary-authors><author><style face="normal" font="default" size="100%">Kundu, J.</style></author></tertiary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient exciton to dopant energy transfer in Mn2+-Doped (C&lt;inf&gt;4&lt;/inf&gt;H&lt;inf&gt;9&lt;/inf&gt;NH&lt;inf&gt;3&lt;/inf&gt;)&lt;inf&gt;2&lt;/inf&gt;PbBr&lt;inf&gt;4&lt;/inf&gt; two-dimensional (2D) layered perovskites</style></title><secondary-title><style face="normal" font="default" size="100%">Chemistry of Materials</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Doping (additives)</style></keyword><keyword><style  face="normal" font="default" size="100%">Energy Efficiency</style></keyword><keyword><style  face="normal" font="default" size="100%">Energy Transfer</style></keyword><keyword><style  face="normal" font="default" size="100%">Exchange interactions</style></keyword><keyword><style  face="normal" font="default" size="100%">Excitons</style></keyword><keyword><style  face="normal" font="default" size="100%">Light Emitting Diodes</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">SEP</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">29</style></volume><pages><style face="normal" font="default" size="100%">7816-7825</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Three-dimensional ABX3 perovskite material has attracted immense interest and applications in optoelectronic devices, because of their enabling properties. Recently, Mn2+ doping directly into APbCl3-type three-dimensional (3D) nanocrystals, manifesting host-to-dopant energy transfer, have been reported for LED display applications. Strongly bound excitons in the doped system can enhance the dopant-carrier exchange interactions, leading to efficient energy transfer. Here, we report the simple and scalable synthesis of Mn2+-doped (C4H9NH3)2PbBr4 two-dimensional (2D) layered perovskites. The Mn2+-doped 2D perovskite shows enhanced energy transfer efficiency from the strongly bound excitons of the host material to the d electrons of Mn2+ ions, resulting in intense orange-yellow emission, which is due to spin-forbidden internal transition (4T1 → 6A1) with the highest quantum yield (Mn2+) of 37%. Because of this high quantum yield, stability in ambient atmosphere, and simplicity and scalability of the synthetic procedure, Mn2+-doped 2D perovskites could be beneficial as color-converting phosphor material and as energy down-shift coating for perovskite solar cells. The newly developed Mn2+-doped 2D perovskites can be a suitable material to tune dopant-exciton exchange interactions to further explore their magneto-optoelectronic properties.</style></abstract><issue><style face="normal" font="default" size="100%">18</style></issue><work-type><style face="normal" font="default" size="100%">Journal Article</style></work-type><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">9.407</style></custom4></record></records></xml>